On one toon, I played through the entire SL expansion. I made a new toon for TWW and leveled from 1-80 using only dungeon finder. I used the Warband ability to copy over all discovered flightpaths, but when I go to Oriboros through the Stormwind portal, the flight path is invisible and unusable. I went to Stormwind keep and initiated the starting quest for SL, selected “I have heard this before (skip)” which took me to Oriboros again. Like before, no usable flight path to get from Oriboros to any SL location. My new toon, max level, has no way of accessing an entire expansion other than the starting city.